ORP
Multi 9310
44
ba75937e03
12/2011
6
ORP
6.1
Measuring
6.1.1 Measuring the ORP
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect. The USB
interface is not galvanically isolated.
Stability control
(AutoRead)
& HOLD function
The stability control function (
AutoRead
) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproduc-
ibility of measured values.
The measured parameter flashes on the display
z
as soon as the measured value is outside the stability range
z
when the automatic
Stability control
is switched off.
You can start the
Stability control
manually at any time, irrespective of the set-
ting for automatic
Stability control
, page 71) in the
System
menu.
IDS ORP sensors are not calibrated. However, you can check IDS
ORP sensors using a test solution.
1.
Connect the ORP sensor to the meter.
The ORP measuring window is displayed.
2.
Adjust the temperature of the solutions and measure the current tem-
perature if the measurement is made without a temperature sensor.
3.
Check the meter with the ORP sensor.
4.
Immerse the ORP sensor in the test sample.
Info
01.07.2011
08:00
USB output
1.
Freeze the measured value with
<AR>
.
The [HOLD] status indicator is displayed.
The HOLD function is active.
Summary of Contents for Multi 9310
Page 101: ......
